Linked Life Data

2316594

Source:http://linkedlifedata.com/resource/pubmed/id/2316594

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
3
pubmed:dateCreated
1990-4-25
pubmed:abstractText
Respiratory frequency, tidal volume, minute ventilation, oxygen consumption, carbon dioxide production, and end-tidal carbon dioxide tension were measured longitudinally during pregnancy and post partum in 20 normal subjects with a computer-assisted mass spectrometer. Resting tidal volume, minute ventilation, oxygen consumption, and carbon dioxide production increased during pregnancy. End-tidal carbon dioxide tension fell progressively during pregnancy. Respiratory exchange ratio was 0.9 at 36 to 39 weeks' gestation and 0.8 at 5-13 weeks post partum. Respiratory frequency did not change during pregnancy. The increase in minute ventilation is in excess of the increase of carbon dioxide production and the resultant fall in end-tidal carbon dioxide tension reflects a fall in systemic arterial blood carbon dioxide tension. The greater respiratory exchange ratio during late pregnancy as compared with post partum also reflects this hyperventilation during pregnancy. Fourteen subjects with pregnancy-induced hypertension studied cross-sectionally failed to show any difference in the respiratory variables measured when compared with normotensive subjects at a similar length of gestation.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
AIM
pubmed:status
MEDLINE
pubmed:month
Mar
pubmed:issn
0002-9378
pubmed:author
pubmed:issnType
Print
pubmed:volume
162
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
826-30
pubmed:dateRevised
2006-11-15
pubmed:meshHeading
pubmed:year
1990
pubmed:articleTitle
A longitudinal study of respiratory changes in normal human pregnancy with cross-sectional data on subjects with pregnancy-induced hypertension.
pubmed:affiliation
Department of Obstetrics and Gynaecology, University Hospital, Nottingham, England.
pubmed:publicationType
Journal Article, Research Support, Non-U.S. Gov't